The A40 Acoustic Instrument Amp is a full-featured amplifier that can double as a portable PA. You can connect your acoustic-electric instruments or any microphone via two combo inputs with independent level controls. And with 40 watts of power the studio-monitor style speaker provides amazing sound. The digital effects processor lets you customize and store your effects and the DSP-based automatic feedback elimination circuit constantly scans for and eliminates feedback. The Bluetooth connectivity provides an ultra-easy playback interface for your mobile devices. The direct output means you can interface with any external PA system and the monitor style cabinet offers exceptional live sound monitoring.